Just for completeness sake and just for fun about 40 or so states allow private sales of firearms without a background check. Of course it is on the seller to

Just for completeness sake and just for fun about 40 or so states allow private sales of firearms without a background check. Of course it is on the seller to know they are not selling to a felon and they may be on the hook if the buyer does something bad though I am straying a bit off topic from age/ID verification and tracking.